Aluminium TF/SD Screen Mini Digital Speaker 1)ROHS,CE,FCC 2)With USB and SD card interface 3)Support SD/TF card ... , mobile phones, MP3, MP4, DVD, CD, U plate and the audio equipment outside put.2. Applicable equipment: SD card, U dish3 ... disk file playback.4. Support external MP3 / MP4 / computer/mobile audio audio inputfunction etc.5. DC5V and 5 P-USB power supply ...